Abstract:
:Field experiments were conducted to assess the potential for anaerobic biostimulation to enhance BTEX biodegradation under fermentative methanogenic conditions in groundwater impacted by a biodiesel blend (B20, consisting of 20 % v/v biodiesel and 80 % v/v diesel). B20 (100 L) was released at each of two plots through an area of 1 m(2) that was excavated down to the water table, 1.6 m below ground surface. One release was biostimulated with ammonium acetate, which was added weekly through injection wells near the source zone over 15 months. The other release was not biostimulated and served as a baseline control simulating natural attenuation. Ammonium acetate addition stimulated the development of strongly anaerobic conditions, as indicated by near-saturation methane concentrations. BTEX removal began within 8 months in the biostimulated source zone, but not in the natural attenuation control, where BTEX concentrations were still increasing (due to source dissolution) 2 years after the release. Phylogenetic analysis using quantitative PCR indicated an increase in concentration and relative abundance of Archaea (Crenarchaeota and Euryarchaeota), Geobacteraceae (Geobacter and Pelobacter spp.) and sulfate-reducing bacteria (Desulfovibrio, Desulfomicrobium, Desulfuromusa, and Desulfuromonas) in the biostimulated plot relative to the control. Apparently, biostimulation fortuitously enhanced the growth of putative anaerobic BTEX degraders and associated commensal microorganisms that consume acetate and H2, and enhance the thermodynamic feasibility of BTEX fermentation. This is the first field study to suggest that anaerobic-methanogenic biostimulation could enhance source zone bioremediation of groundwater aquifers impacted by biodiesel blends.
journal_name
Biodegradationjournal_title
Biodegradationauthors
Ramos DT,da Silva ML,Chiaranda HS,Alvarez PJ,Corseuil HXdoi
10.1007/s10532-012-9589-ysubject
Has Abstractpub_date
2013-06-01 00:00:00pages
333-41issue
3eissn
0923-9820issn
1572-9729journal_volume
24pub_type
杂志文章相关文献
BIODEGRADATION文献大全abstract::Phenanthrene mineralization rates were found to vary widely among four soils; differences in soil nutrient levels was one hypothesis to explain this variation. To test this hypothesis, phenanthrene mineralization rates were measured in these soils with, and without, added nitrogen and phosphorus. Mineralization rates ...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1023/a:1008359606545
更新日期:1999-02-01 00:00:00
abstract::Methanol-oxidizing bacteria may play an important role in the development and use of biological treatment systems for the removal of methanol from industrial effluents. Optimization of methanol degradation potential in such systems is contingent on availability of nutrients, such as nitrogen, in the most favorable for...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-010-9400-x
更新日期:2011-04-01 00:00:00
abstract::The anaerobic degradation of the polyesters poly-3-hydroxybutyrate (PHB) and poly-3-hydroxybutyrate-co-3-hydroxyvalerate (PHBV) was investigated with special regard to intermediate products, kinetics, and yields. During the degradation of PHBV acetate, propionate, n-butyrate, and n-valerate were detected. Additionally...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1023/a:1008203525476
更新日期:1997-01-01 00:00:00
abstract::A Gram-negative bacterium was isolated from river sediment which was able to grow with nitrilotriacetic acid as a combined carbon, nitrogen and energy source in the absence of molecular oxygen using nitrate as the terminal electron acceptor. Batch growth parameters and mass balances are reported for growth under both ...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/BF00117049
更新日期:1990-01-01 00:00:00
abstract::The mechanisms occurring in a photolytic circulating-bed biofilm reactor (PCBBR) treating 2,4,6-trichlorophenol (TCP) were investigated using batch experiments following three protocols: photodegradation alone (P), biodegradation alone (B), and intimately coupled photodegradation and biodegradation (P&B). Initially, t...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-012-9534-0
更新日期:2012-07-01 00:00:00
abstract::Three identical upflow laboratory-scale biofilters, inoculated with the benzene-degrading strain Pseudomonas sp. NCIMB 9688 but filled up with different packing media (PM), specifically raw sugarcane bagasse, sieved sugarcane bagasse and peat, were employed to eliminate benzene from waste air. Biofilters performances ...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1023/b:biod.0000015613.91044.a4
更新日期:2004-04-01 00:00:00
abstract::The ability of bacterial cultures to degrade diethanolamine under anoxic conditions with nitrate as an electron acceptor was investigated. A mixed culture capable of anaerobic degradation of diethanolamine was obtained from river sediments by enrichment culture. From this a single bacterial strain was isolated which c...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/BF00058178
更新日期:1996-06-01 00:00:00
abstract::The increasing production of several plastics such as expanded polystyrene, widely used as packaging and building materials, has caused the release of considerable amounts of pentane employed as an expanding agent. Today many microorganisms are used to degrade hydrocarbons in order to minimize contamination caused by ...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10531-004-0473-x
更新日期:2005-02-01 00:00:00
abstract::The capacity of the beta-Proteobacterium Pseudomonas sp. strain P51, which degrades chlorinated benzenes, to metabolize 1,2,4-trichlorobenzene (TCB) under environmental conditions was tested by its release into two experimental systems. The first system consisted of laboratory scale microcosms which were operated with...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1023/a:1008368006917
更新日期:1999-04-01 00:00:00
abstract::Rhodococcus sp. BX2 degrades bensulfuron-methyl but not butachlor, and Acinetobacter sp. LYC-1 degrades butachlor but not bensulfuron-methyl. Functional strains were constructed through protoplast fusion of Rhodococcus sp. BX2 and Acinetobacter sp. LYC-1 to generate fusants with an improved ability to simultaneously d...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-012-9556-7
更新日期:2013-02-01 00:00:00
abstract::The biodegradation of rubber particles in rubber-soil mixtures at different rubber contents was monitored by the carbon dioxide production. The cumulative carbon dioxide production was modelled according to a two parameter exponential function. The model provides an excellent fit (R2 > 0.98) for the observed data. The...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/BF00115746
更新日期:1996-08-01 00:00:00
abstract::In biological nitrogen removal, application of the autotrophic anammox process is gaining ground worldwide. Although this field has been widely researched in last years, some aspects as the accelerating effect of putative intermediates (mainly N₂H₄ and NH₂OH) need more specific investigation. In the current study, exp...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-012-9549-6
更新日期:2012-09-01 00:00:00
abstract::Air-born mixed fungal and bacterial culture capable of complete degradation of ciliatine was isolated. The utilization of the natural organophosphonate proceeded in the phosphate independent manner. Enzymatic activity involved in ciliatine degradation studied in the fungal cell-free extract proved to be distinct from ...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-006-9057-7
更新日期:2007-04-01 00:00:00
abstract::Forty-five fenobucarb-degrading bacteria were isolated from rice paddy soils, and their genetic and phenotypic characteristics were investigated. The isolates were able to utilize fenobucarb as a sole source of carbon and energy. Analysis of the 16S rRNA gene sequence indicated that all the isolates were related to me...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-013-9667-9
更新日期:2014-06-01 00:00:00
abstract::Synthetic iron oxides (goethite, alpha-FeO.OH; hematite, Fe2O3; and ferrihydrite, Fe(OH)3) were used as model compounds to simulate the mineralogy of surface films on carbon steel. Dissolution of these oxides exposed to pure cultures of the metal-reducing bacterium, Shewanella putrefaciens, was followed by direct atom...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1023/a:1008264313065
更新日期:1998-01-01 00:00:00
abstract::Two stage statistical design was used to optimize xylanase production from Bacillus pumilus ASH under solid-state fermentation. Initially, Plackett-Burman designing (PB) was used for the selection of crucial production parameters. Peptone, yeast extract, incubation time, moisture level and pH were found to be the cruc...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-011-9470-4
更新日期:2011-11-01 00:00:00
abstract::Pyridine and pyridine based products are of major concern as environmental pollutants due to their recalcitrant, persistent, toxic and teratogenic nature. In this study, we describe biodegradation of pyridine by an isolated consortium/strain under aerobic condition. Batch experiment results reveal that at lower initia...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-008-9176-4
更新日期:2008-09-01 00:00:00
abstract::Trichloroethylene (TCE) is extensively used in commercial applications, despite its risk to human health via soil and groundwater contamination. The stability of TCE, which is a useful characteristic for commercial application, makes it difficult to remove it from the environment. Numerous studies have demonstrated th...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-012-9544-y
更新日期:2012-09-01 00:00:00
abstract::A soil microorganism, designated as P7, was characterized and investigated for its ability to degrade polyurethane (PU). This bacterial isolate was identified as Acinetobacter gerneri on the basis of 16 s rRNA sequencing and biochemical phenotype analysis. The ability of this organism to degrade polyurethane was chara...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-011-9533-6
更新日期:2012-07-01 00:00:00
abstract::Species of the genus Variovorax are often isolated from nitrile or amide-containing organic compound-contaminated soil. However, there have been few biological characterizations of Variovorax and their contaminant-degrading enzymes. Previously, we reported a new soil isolate, Variovorax boronicumulans CGMCC 4969, and ...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-013-9633-6
更新日期:2013-11-01 00:00:00
abstract::The performance of diesel oil degradation by Candida tropicalis immobilized on various conventional matrices (sodium alginate, carboxyl methyl cellulose, chitosan) and biowaste materials (wheat bran, sawdust, peanut hull powder) was investigated using the method of entrapment and physical adsorption. The yeast species...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-011-9473-1
更新日期:2011-11-01 00:00:00
abstract::A field-scale fixed bed bioreactor was used to successfully treat an MTBE-contaminated aquifer in North Hollywood, CA without requiring inoculation with introduced bacteria. Native bacteria from the MTBE-impacted aquifer rapidly colonized the bioreactor, entering the bioreactor in the contaminated groundwater pumped f...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-013-9639-0
更新日期:2014-02-01 00:00:00
abstract::Methylmercury (MeHg) is one of the most dangerous heavy metal for living organisms that may be found in environment. Given the crescent industrialization of Brazil and considering that mercury is a residue of several industrial processes, there is an increasing need to encounter and develop remediation approaches of m...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-012-9588-z
更新日期:2013-06-01 00:00:00
abstract::A chitosanase and a protease were purified from the culture supernatant of Serratia sp. TKU016 with shrimp shell as the sole carbon/nitrogen source. The molecular masses of the chitosanase and protease determined by SDS-PAGE were approximately 65 and 53 kDa, respectively. The chitosanase was inhibited completely by Mn...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-009-9303-x
更新日期:2010-06-01 00:00:00
abstract::Bacterial yield prediction is critical for bioprocess optimization and modeling of natural biological systems. In previous work, an expanded thermodynamic true yield prediction model was developed through incorporating carbon balance and nitrogen balance along with electron balance and energy balance. In the present w...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-007-9119-5
更新日期:2008-02-01 00:00:00
abstract::A field experiment, lasting 14 months, was carried out in order to assess the effect of organic amendment and lime addition on the bioavailability of heavy metals in contaminated soils. The experiment took place in a soil affected by acid, highly toxic pyritic waste from the Aznalcóllar mine (Seville, Spain) in April ...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1023/a:1024288505979
更新日期:2003-06-01 00:00:00
abstract::The aerobic bacterial degradation of chloroaromatic compounds often involves chlorosubstituted catechols as central intermediates. They are converted to 3-oxoadipate in a series of reactions similar to that for catechol catabolism and therefore designated as modified ortho-cleavage pathway. Among the enzymes of this c...
journal_title:Biodegradation
pub_type: 杂志文章,评审
doi:10.1007/BF00696467
更新日期:1994-12-01 00:00:00
abstract::Biosorption is an effective means of removal of heavy metals from wastewater. In this work the biosorption behavior of Cladophora fascicularis was investigated as a function of pH, amount of biosorbent, initial Cu2+ concentration, temperature, and co-existing ions. Adsorption equilibria were well described by Langmuir...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-006-9074-6
更新日期:2007-08-01 00:00:00
abstract::In this paper, Fourier Transform infrared spectroscopy (FTIR) along with thermogravimetric analysis together with mass spectrometry (TG-MS analysis) were employed to study the organic matter transformation attained under anaerobic digestion of slaughterhouse waste and to establish the stability of the digestates obtai...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-009-9322-7
更新日期:2010-07-01 00:00:00
abstract::Due to their amphipathic nature, biosurfactants are multifunctional molecules that have considerable potential in several industries, especially the petroleum industry. In this study, the commercial production of a biosurfactant from Pseudomonas cepacia CCT6659 grown on industrial waste was investigated in a semi-indu...
journal_title:Biodegradation
pub_type: 杂志文章
doi:10.1007/s10532-018-9830-4
更新日期:2019-08-01 00:00:00